SMM766B Datasheet - Summit Microelectronics

INTRODUCTION
   The SMM766B is an Active DC Output power supply Controller (ADOCTM) that monitors, margins, and cascade sequences. The ADOC feature is unique and maintains extremely accurate settings of system supply voltages to within ±0.2% under full load. The SMM766B actively controls up to 6 DC/DC converters and can be linked with up to 7 other Sequence-Link™ devices to accommodate sequencing of up to 48 channels. Control of the DC-DC converters is accomplished through the use of a Trim or Regulator VADJ/FB pin to adjust the output voltage.

FEATURES & APPLICATIONS
• Extremely accurate (±0.2%) Active DC Output
   Control (ADOC™)
• Sequence-Link™ provides sequencing of up to
   48 channels
• ADOC automatically adjusts supply output
   voltage level under all DC load conditions
• Monitors, controls, and margins up to 6
   supplies from 0.3V to 5.5V with 1.25V Vref
• Programmable power-on/-off sequencing
• Operates from any intermediate bus supply
   from 6V to 14V and from 2.7V to 5.5V
• Monitors 12V input VDD and temperature sensor
• Wide margin/ADOC range from 0.3V to VDD
• Monitors two general-purpose 10-bit ADC inputs
• I2C 2-wire serial bus for programming
   configuration and monitoring status, including
   10-bit ADC conversion results
• 2 programmable Under Voltage (UV) and Over
   Voltage (OV) threshold limits for each of 11
   monitored inputs
• 2k-bit general purpose nonvolatile memory
   Applications
• Monitor/control distributed and POL supplies
• Multi-voltage processors, DSPs, ASICSs used in
   telecom, CompactPCI or server systems